Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96.1319b&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 96, Oct. 1988, p. 1319-1331.
Astronomy and Astrophysics
Astronomy
30
Abundance, Elliptical Galaxies, Galactic Nuclei, Metallicity, Near Ultraviolet Radiation, Ultraviolet Spectra, Chemical Composition, Solar Neighborhood, Stellar Luminosity, Stellar Spectra
Scientific paper
Near-UV spectra have been obtained for the nucleus of the elliptical galaxy M32 and for 60 field stars covering a range in Teff, luminosity class, and [Fe/H] using the UV prime-focus spectrograph on the Canada-France-Hawaii Telescope. The spectra cover the wavelength interval λλ3200 - 3900 Å at a resolution of 2.5 Å FWHM. A number of quantitative spectral indices have been defined that are sensitive to surface gravity and/or metal abundance. In particular, a depression in the pseudocontinuum shortward of 3504 Å is shown to be highly sensitive to metal abundance. The spectral indices have been used to determine the luminosity-weighted mean metal abundance and surface gravity of M32 at 3500 Å.
Boulade Olivier
Rose James A.
Vigroux Laurent
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